html{
    width: 100%;
    height: 100%;
}
body{
    width: 100%;
    /* height: 100%; */
    margin: 0;
    padding: 0;
}
.bigbox{
    width: 820px;
    margin-left: 20%;
    margin: 2vh auto 0;
}
.bigbox p{
    display: inline;
    line-height: 1.2em;
    font-size: 14px;
}
.bigbox h1{
    display: inline;
    line-height: 2.5em;
}
.bigbox img{
    margin-top: 20px;
    /* margin-bottom: 20px; */
}
.bigbox .Chrome{
    color: blue;
    text-decoration-line: underline;
    cursor: pointer;
    font-weight: bold;
}
.bigbox .prompt{
    font-size: 12px;
    color: #999;
}
.bigbox .p1{
    font-size: 16px;
    font-weight: bold;
}
.bigbox .p2{
    margin-top: 20px;
    padding-top: 20px;
    font-size: 12px;
}
.bigbox .gaoji{
    font-size: 14px;
    cursor: pointer;
    color: #999;
}
.bigbox .gaoji li:hover a{
    display: block;
}
.bigbox .gaoji a{
    display: none;
    font-weight: bold;
    color: red;
    margin-top: 8px;
    font-size: 14px;
}